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United States of America Patent

PATENT NO 9856834
SERIAL NO

14720573

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A pre-filter includes a first stage, a second stage, and a third stage. The first stage includes a first stage screen, a brush disposed against the first stage screen, and an actuator to move the brush and the first stage screen relative to one another. The second stage includes a centrifugal separator. The third stage includes a filter media having pores of a predetermined size.

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Patent Owner(s)

  • CATERPILLAR INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rosenfeld, Mark Peoria, US 3 33

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